A.K.A. Albert Haynesworth disease. Known to affect large, unfit individuals on the Redkins offensive line after 1 to 2 consecutive plays. Symptoms include phantom ACL tears, "back spasms" and other clearly non-life threatening falls to the turf.

Oh shit, the Skins $100MM off-season championship Albert Haynesworth looks like he must have broken his femure - he's really writhing around on the ground...

No, dipshit, that's just his Selective Fatigue Syndrome. He'll eat a donut on the sideline and will be fine after he takes another 4 series off.